<template>
  <div class="swiper-container">
    <div class="swiper-wrapper">
      <!-- 循环下面的展示小图 -->
      <div
        class="swiper-slide"
        v-for="(skuImage, index) in this.imgUrl"
        :key="skuImage.id"
      >
      <!-- 点击更改图片样式及切换图片 -->
        <img :src="skuImage.imgUrl" :class="{active:currentIndex==index}" @click='changeImg(index)'/>
      </div>
    </div>
    <div class="swiper-button-next"></div>
    <div class="swiper-button-prev"></div>
  </div>
</template>

<script>
import Swiper from "swiper";
export default {
  name: "ImageList",
  data(){
    return{
      currentIndex:0
    }
  },
  props: ["skuInfo"],
  computed: {
    imgUrl() {
      return this.skuInfo.skuImageList || [];
    },
  },
  methods:{
   changeImg(index){
       this.currentIndex=index
       console.log("img",index);
       this.$bus.$emit("changeBigImage",this.currentIndex)
    }
  },
  watch: {
    imgUrl: {
      handler(oldValue, newValue) {
        this.$nextTick(() => {
          new Swiper(".swiper-container", {
            loop: true, // 循环模式选项
            slidesPerView: 3,//显示3个
             slidesPerGroup:1,//每次循环1

            // 如果需要分页器
            pagination: {
              el: ".swiper-pagination",
            },

            // 如果需要前进后退按钮
            navigation: {
              nextEl: ".swiper-button-next",
              prevEl: ".swiper-button-prev",
            },

            // 如果需要滚动条
            scrollbar: {
              el: ".swiper-scrollbar",
            },
          });
        });
      },
    },
  },
};
</script>

<style lang="less" scoped>
.swiper-container {
  height: 56px;
  width: 412px;
  box-sizing: border-box;
  padding: 0 12px;

  .swiper-slide {
    width: 56px;
    height: 56px;

    img {
      width: 100%;
      height: 100%;
      border: 1px solid #ccc;
      padding: 2px;
      width: 50px;
      height: 50px;
      display: block;

      &.active {
        border: 2px solid #f60;
        padding: 1px;
      }
    }
  }

  .swiper-button-next {
    left: auto;
    right: 0;
  }

  .swiper-button-prev {
    left: 0;
    right: auto;
  }

  .swiper-button-next,
  .swiper-button-prev {
    box-sizing: border-box;
    width: 12px;
    height: 56px;
    background: rgb(235, 235, 235);
    border: 1px solid rgb(204, 204, 204);
    top: 0;
    margin-top: 0;
    &::after {
      font-size: 12px;
    }
  }
}
</style>